Getting Pixel Information from a BitmapImage
I need to get an array of pixels from a BitmapImage. I need to know the Argb values of each individual pixel, as well as the x-y coordinates of the pixel within the BitmapImage. Is there a way of doing...
View ArticleReceiving FailFast in FlowDocument w/ certain line indent settings
Developing a desktop WPF (.NET 4) application using VS 2010 SP1, running on Windows 7 Ultimate. We are using the FlowDocument to display formatted data.When the user has finished entering the data in...
View ArticleDatagrid Lost Focus Brush
When datagrid loses focus to another control, the brush for the selected row is light grey.How can I grab and set that brush? I'd like to set it to the same color as when it's selected.Example: Show...
View ArticleThreading and WPF - how does it work?
Can anyone explain or give a pointer to an explanation of the threading in C# / WPF?Especially I'd like to have a non-object oriented explanation about background worker.That is: I'd like to have an...
View ArticleError of Layout WPF
I have this SurfaceListBox:<my:SurfaceListBox Margin="10" x:Name="grid1" VirtualizingStackPanel.IsVirtualizing="True" Style="{DynamicResource SurfaceListBoxStyle1}"...
View ArticleObjectQuery by reflection
Hello guys! I'm trying to do something like this with reflection and no luck...this.EFMODELINSTANCE.Entry((PERSON)instance).Collection(d => d.somePersonProperty).Query().Count();what i'm trying to...
View ArticleHow to bind the Image Source property of a XAML element to an individual List...
I have a List<> object which changes dynamically (let's call itmyList), and I have a property called "currentIndex" to track the visibility of the current item on the screen for the user.myList...
View ArticleHow to handle duplicate Drawing Visuals/Icons to save memory
For some background. I have a group of DrawingVisuals that represent a vehicle. Each vehicle consists a single "main" DrawingVisual with several child DrawingVisual's each with one polygon.In this way...
View ArticleGet Token value from data template items
I am tryin to get Datacontrol value (TextBlock) from code behind I have xaml like <code> <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"...
View ArticleBind dataset to datagrid with combobox column
I have a datatable with distinct rows like: col1,col2,col3,col4 A,B,C,E A,B,C,F L,M,N,O P,Q,R,S P,Q,R,T P,Q,R,U Now, I want to bind the above to a datagrid containing 4 columns, with the 4th column...
View ArticleConfusing Question About MVVM and Window Closing Event (Setting Cancel to...
Strictly adhering to MVVM, I'd like to cancel the closing of a window when the user clicks the "X" or standard Windows close button.The ViewModel is as follows:private...
View ArticleWPF Custom Event Handling
Hello Everyone,I'm trying to do what I feel like is very basic but I haven't found anything obvious as a solution.Using MVVM, I have a Window - MainWindow.xaml, with VM MainWindowViewModeland I have a...
View ArticleWPF DataGrid "loses" column sortdirection binding when rows are refreshed...
This is driving me nuts and I spent a few days trying to fix it:I have a WPF DataGrid that gets paged results from the database (custom implementation, not using anything from toolkit or third party)....
View ArticleHow to close View from ViewModel without using code behind?
My application is showing a View as though it were a modal dialog. This view can be closed as a result of the user clicking on an OK or Cancel button. Because the OK closure has work to do in the VM...
View ArticleShapes.Path MouseOver Event
Hello,I am editing the a xaml style file that has several System.Windows.Shapes.Path s defined as part of a style. I would like to make them bold or change color on mouseover. However, I don't have...
View ArticleAdded few buttons on expander header...Buttons are not clickable
Added few buttons on expander header...Buttons are not clickable...I have done like below...Created a DataTemplate<DataTemplate x:Key="ExpanderHeaderTemplate"><StackPanel...
View ArticleStringFormat XAML add dashes to string value
Is it possible to format a number like 123456789000 to 123-456-789-000 using stringformat in xaml (wpf)? It seems most examples I see are for formatting dates and numbers, not strings. Here are some...
View ArticleWPF Apps stop responding to touches while mouse continues to work
WPF applications stop responding to the touchscreen (we are using simple button click events) after some period of time (not consistent) but WILL respond to mouse clicks and the non-WPF applications...
View ArticleIs it possible to unfocus an element wihout having a second object inside the...
Heyi dont know how to release the focus of a TextBox, if the textbox is the only child inside a window, what can retrieve the keyboard focus. Is there a method????
View ArticleWhy the UI stands still if i open a new Window??
Hey, i'm trying to undertsand why evry time i open a new Window from inside of my application the hole UI will stands still?So im trying to use a second thread with Dispatcher.BeginInvoke but the...
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